knight



(No Model.) 2 Sheets-Sheen 1. V E. M. KNIGHT.

KNIFE CLEANING MACHINE.

No. 285,278. Patented Sept. 18, 1883.

(No Model.) 2 Sheets-Sheet 2. E. M. KNIGHT.

KNIFE CLEANING MAUHINE.

Qm 8 8 1 8 1 p nu S d nu t n e t a P m 7 9 fl F u a? 7 5 0O 2 m N WWQA UNITED STATES PATENT OFFICE.

EDWARD M. KNIGHT, OF LIVERPOOL, COUNTY OF LAN OASTER, ENGLAND.

KNIFE-CLEANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 285,278, dated September 18, 1883. I Application-filed May 8, 1882. (No model.) Patented in England January 9, 1882, No. 116.

T 0 all whom it may concern:

Be it known that I, EDWARD MARTIN KNIGHT, a subject of Her Majesty Queen Victoria, residing at Liverpool, in the county of Lancaster, England, have invented a new and useful Improvement in Knife-Cleaning Machines, (for which I obtained patent in Great Britain, No. 116, bearing date January 9, 1882,) of which the following is a specification.

This invention relates to knife-cleaning machines in which india-rubber rollers are employed; and the objects of my improvements are, first, to provide improved bearing=blocks or end frames for the axles of the rollers, whereby all springs and screw adjustments are dispensed with; secondly, to' apply an improved emery-wheel, polishing-roller, and cleaningbrush on one axle. I attain these objects by mechanism illustrated in the accompanying drawings, in which-- Figure 1 is an elevation, the framing and roller-bearing blocks being in section. Fig. 2 is a plan View with right-hand cap of bearing removed. Fig. 3 is a left-hand end elevation, showing bearing-blocks and axles of rollers therein. Fig. 4 is an opposite end elevation,

showing gearing. Figs. 5 and 6 are elevations and plan of bearing-block detached Fig. 7 is an elevation of top polishing-roller, the emery-wheel and cleaning-brush being in section,

. and the right-hand bearing in section, that at chine.

the left in elevation. Fig. 8 is a plan view of Fig. 7 Fig. 9, an enlarged view, about full size, of emery-wheel and part of end of ma- Fig. 10 is an end view of the brush.

A is the framework of the machine; B, the top polishing-roller; C, the bottom polishing roller. D D are bearingblocks. the top roller is passed through the holes E E. The axle of the bottom roller rests in the 1101- lows F F of the frame, and is held down by the concave parts G G of the blocks D. The bearing-blocks are filed, so as to fit between the upright parts H H of frame A. Over the whole is the cap J J, having holding-screws K K. The cavity G and bottom of hearing- The axle of blocks are filed until the top roller, B, touches and slightly bears on the lower roller, 0, the cap J securing the whole. In practice it is 'found that elasticity of the india-rubber rollers is sufficient to compensate for variation in thickness of knife-blades without any screw adjustment or springs applied to the bearingblocks.

In Figs. 1 and 2 I have only given an indi cation of the position of the roller B. Its construction is shown in Figs. 7 and 8that is to say, it carries near one end the emery-wheel L, mounted on a cast-iron pulley, M, 011 the axle of the roller B. At N N are notches formed in the cap J, which form a rest for the back of blade when sharpening the blade 011 the emery-wheel. At or near the other end of the roller B is mounted upon it the brush P, for cleaning grooves or ornamental part of the bolster or shoulder. of a knife. The bristles of the brush P are affixedin the circular wooden block B, Fig. 10, the latter being fixed or driven tight upon the axle of the roller. Figs. 7 and 8 illustrate apparatus, as aforesaid, suitable for larger and wider machines.

I am aware that prior to my invention knifecleaning machines have been made having india-rubber rollers and the same system of gearing as illustrated by the drawings annexed thereto, to which I make no claim.

What I do claim as my invention, and desire to secure by Letters Patent, is

1. The combination of bearing-blocks D, having aperture E and cavities G, with the frame A, having recesses F F, with the caps J J, and two rollers, B C, substantially as herein shown and described.

2. The combination of india-rubber roller B, emery-wheel L, and cleaning-brush P, on one shaft, with the counter-roller O, as and for the purpose hereinshown and described.

EDWARD MARTIN KNIGHT. 

